SLUMDOG Millionaire director Danny Boyle is to film the true story of an American climber who hacked off part of his arm with a knife after it became trapped under a rock, according to reports.

A CLIMBER who escaped death by sawing off his arm which was trapped beneath a fallen rock told yesterday how he kept a video diary of what he thought would be his last hours of life.

A climber who escaped death by sawing off his arm which was trapped beneath a fallen rock told today how he kept a video diary of what he thought would be his last hours of life.

A climber in the US amputated his own arm five days after becoming pinned by a boulder.